It should come as little surprise that Jim Boeheim, now on the job as Syracuse's head basketball coach for 38 years, 2 months and 3 days, possesses the longest tenure in one job among active Division I coaches.

ACC Coaching Tenures

Nor should it be stunning to find Duke's Mike Krzyzewski (34 years, 2 months and 19 days) slotted at No. 2.

Still, it might be a little unexpected to find the rest of the ACC providing stability unlike any other conference, particularly in its latest configuration.

Notre Dame's Mike Brey is 24th in tenure. Rick Pitino of Louisville is 25th. Checking in at No. 32 in Florida State's Leonard Hamilton, with North Carolina's Roy Williams (No. 38) and Pittsburgh's Jamie Dixon (No. 39) nearly cracking the top 10 percent of the list.

That's seven coaches in the top 40, accounting for nearly half of the conference's 15 jobs. The Big Ten, Big 12, Pac-12 and SEC combined for seven of the 40 longest coaching tenures in the sport.

That's just one of the ways to get lost in the 1-through-351 (well, 1-through-348 at the moment) tenure list. A few other tidbits to consider before tearing into the list below …

Three jobs remain vacant (Florida A&M, Marist and Mississippi Valley). By this point last year, all 351 Division I jobs were filled, although three came open in July.(UPDATE: Florida A&M's hire is now reflected in the list)

The median hire date of all Division I coaches is March 23, 2011 (Steve Payne of Tennessee Tech). Put another way, more than half of all Division I coaches have been on the job for less than 39 months.

Syracuse's Jim Boeheim and Duke's Mike Krzyzewski have combined for 72 seasons in their current positions. The 98 coaches (plus the three schools with vacancies) at the bottom of the list have combined for 71 partial or full seasons in their current positions.

Almost exactly a quarter of all Division I schools — 88 of 351, or 25.1 percent — have hired a new coach (or have a vacancy to fill) within the last 15 months.

Rising true seniors (players who would have entered school in the fall of 2011) at 131 of 351 Division I programs have experienced a coaching change, which covers 37.3 percent of all D-I schools. That's actually down from the 41.9 percent for last year's rising seniors at this time.

For rising true seniors who signed with their respective schools in the early signing period (fall of 2010), the numbers are even more stark. There has been a head coaching change at 179 of 351 Division I schools since then (51.0 percent).

The longest-tenured coach without a Division I NCAA tournament appearance is Presbyterian's Gregg Nibert (fifth). However, Nibert took the Blue Hose to four Division II tournaments before the program transitioned to Division I in 2007-08 and owns 390 career victories.

The longest-tenured coach without a Division I NCAA tournament appearance whose entire tenure has occurred in Division I is Yale's James Jones (21st). He has won a school-record 209 games in 15 seasons with the Bulldogs.

The longest-tenured coach in the seven highest-profile leagues (the five power conferences in football, plus the American and the Big East) without an NCAA tournament bid is Jeff Lebo of East Carolina. Lebo is 136th in coaching tenure and has not reached an NCAA tournament in his first four seasons, all in Conference USA. Other notable coaches who are 0-for-4: Central Florida's Donnie Jones (tied for 139th), Seton Hall's Kevin Willard (tied for 141st), DePaul's Oliver Purnell (147th) and Tulane's Ed Conroy (148th). Of that group, Lebo, Jones and Conroy spent much of their time on the job in Conference USA.

No coach in the five power conferences has been on the job for four years and not reached the NCAA tournament. Six coaches in those leagues are 0-for-3: Arkansas' Mike Anderson, Georgia Tech's Brian Gregory, Maryland's Mark Turgeon, Penn State's Patrick Chambers, Texas A&M's Billy Kennedy and Utah's Larry Krystkowiak.

The longest-tenured coaches in power conferences without a Final Four appearance are Vanderbilt's Kevin Stallings (20th), Notre Dame's Mike Brey (24th), Florida State's Leonard Hamilton (32nd) and Washington's Lorenzo Romar (33rd). The only other power-conference coaches with 10 years on the job and no Final Four trips are Pittsburgh's Jamie Dixon (39th) and Baylor's Scott Drew (44th).

The group of coaches hired after 2009 season (five years ago) has had remarkable staying power. Of the 32 new hires in that cycle, 20 remain in their current positions.

Of the 351 Division I positions, only 113 have not turned over since the end of George W. Bush's presidency. Only 24 coaches were hired to their current jobs while Bill Clinton was in the White House; eight have tenures stretching back to the George H.W. Bush administration; four had their current jobs while Ronald Reagan was president; and just two took over during the Jimmy Carter years.

Of the 32 Division I conferences, 25 have coaches who have completed 10 seasons at their current school. The exceptions: The MEAC (Savannah State's Horace Broadnax has nine seasons), the SWAC (Alabama State's Lewis Jackson has nine seasons), the Missouri Valley (Northern Iowa's Ben Jacobson has eight seasons), the Big Sky (Weber State's Randy Rahe and North Dakota's Brian Jones both have eight seasons), the American (Cincinnati's Mick Cronin and Temple's Fran Dunphy both have eight seasons) and the Metro Atlantic (John Dunne of St. Peter's has eight seasons).

There was a coaching change in 19 out of 32 leagues since the end of the 2013-14 season. Only three conferences have not experienced at least one coaching change in the last two offseasons: The Atlantic 10, the Horizon League and the Ivy League.